.fade-enter-active,
.fade-leave-active {
    transition: opacity .6s
}

.fade-enter,
.fade-leave-to {
    opacity: 0
}

.bk-select {
    width: 100%;
    display: block;
    box-sizing: border-box;
    vertical-align: middle;
    color: #495060;
    font-size: 14px;
    line-height: normal;
}

.bk-select-selection {
    position: relative;
    display: block;
    box-sizing: border-box;
    outline: 0;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
    cursor: pointer;
    position: relative;
    background-color: #fff;
    border-radius: 4px;
    border: 1px solid #dddee1;
    transition: all .5s ease-in-out;
}

.bk-select-disabled .bk-select-selection {
    background-color: #f3f3f3;
    opacity: 1;
    cursor: not-allowed;
    color: #ccc;
}

.bk-select-visible .bk-select-selection {
    border-color: #57a3f3;
    outline: 0;
    box-shadow: 0 0 0 2px rgba(45, 140, 240, .2);
}

.bk-select-error .bk-select-selection {
    border-color: #ed3f14;
    outline: 0;
    box-shadow: 0;
}

.bk-select-error-tip {
    position: absolute;
    top: 100%;
    left: 0;
    line-height: 1;
    padding-top: 6px;
    color: #ed3f14;
}

.bk-select-placeholder {
    color: #ccc;
}

.bk-select-selected-value {
    color: #606266;
}

.bk-select-placeholder,
.bk-select-selected-value {
    display: block;
    font-size: 12px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    padding-left: 8px;
    padding-right: 24px;
}

.bk-select-selection .bk-select-caret {
    position: absolute;
    top: 50%;
    right: 8px;
    margin-top: -2.5px;
    display: inline-block;
    width: 0;
    height: 0;
    overflow: hidden;
    line-height: 0;
    font-size: 0;
    vertical-align: middle;
    border-top: 5px solid #495060;
    border-bottom: 0 none;
    border-left: 5px solid transparent;
    border-right: 5px solid transparent;
    transition: all .2s ease-in-out;
}

.bk-select-selection .bk-select-caret.up {
    transform: rotate(180deg);
}

.bk-select-dropdown {
    background-color: #fff;
    box-sizing: border-box;
    border-radius: 4px;
    box-shadow: 0 1px 6px rgba(0, 0, 0, .2);
    z-index: 100000;
}

.bk-select-selection .bk-select-caret-x {
    position: absolute;
    top: 50%;
    right: 8px;
    margin-top: -10px;
    display: inline-block;
    overflow: hidden;
    font-size: 20px;
    vertical-align: middle;
}

.bk-select-menu {
    overflow: auto;
}

.bk-select-item {
    padding: 7px 16px;
    cursor: pointer;
}

.bk-select-item:hover,
.bk-select-item-focus {
    background-color: #f5f7fa;
}

.bk-select-item-selected {
    color: #409EFF;
}

.bk-select-search {
    padding: 7px 16px;
}

.bk-select-input {
    display: inline-block;
    padding: 0 24px 0 8px;
    font-size: 12px;
    outline: 0;
    border: none;
    box-sizing: border-box;
    color: #495060;
    background-color: transparent;
    position: relative;
    cursor: pointer;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.bk-select-msg {
    text-align: center;
    font-size: 12px;
    color: #dcdfe6;
    padding: 4px 0;
}

.bk-select-s .bk-select-input,
.bk-select-s .bk-select-placeholder,
.bk-select-s .bk-select-selected-value {
    width: 100%;
    height: 22px;
    line-height: 22px;
}

.bk-select-m .bk-select-input,
.bk-select-m .bk-select-placeholder,
.bk-select-m .bk-select-selected-value {
    width: 100%;
    height: 30px;
    line-height: 30px;
}

.bk-select-l .bk-select-input,
.bk-select-l .bk-select-placeholder,
.bk-select-l .bk-select-selected-value {
    width: 100%;
    height: 34px;
    line-height: 34px;
}

.select-icon-load {
    animation: select-spin 1s linear infinite;
}

@keyframes select-spin {
    from {
        transform: rotate(0deg);
    }
    50% {
        transform: rotate(180deg);
    }
    to {
        transform: rotate(360deg);
    }
}